[clang] [llvm] [HLSL] AST support for WaveSize attribute. (PR #101240)

[Chris B via cfe-commits]

================
@@ -12361,6 +12361,21 @@ def warn_hlsl_availability_unavailable :
 def err_hlsl_export_not_on_function : Error<
   "export declaration can only be used on functions">;
 
+def err_hlsl_attribute_in_wrong_shader_model: Error<
+  "attribute %0 requires shader model %1 or greater">;
+
+def err_hlsl_wavesize_size: Error<
+  "wavesize arguments must be between 4 and 128 and a power of 2">;
+def err_hlsl_wavesize_min_geq_max: Error<
+  "minimum wavesize value %0 must be less than maximum wavesize value %1">;
+def warn_hlsl_wavesize_min_eq_max:  Warning<
+  "wave size range minimum and maximum are equal">,
----------------
llvm-beanz wrote:

Can we make this more generic and match other attribute formats?
```suggestion
def warn_attr_min_eq_max:  Warning<
  "%0 attribute minimum and maximum arguments are equal">,
```

https://github.com/llvm/llvm-project/pull/101240